[MLB-WIRELESS] I'm ready to make 4 points in Camberwell happen

[David Ashburner]

You are almost there,

Didn't see you at the meeting in November, come to the one tonight and say 
"Hey I'm the dude  who want's to put 4 nodes in Camberwell" - you will get 
all the help you need

see comments in-line

cheers,
dna

>Here are the nodes with suggestions / thoughts to date:
>
>Node 1: Church where I put an antenna on the spire. Central Server to be
>stored at Church for other nodes to access.
>Antenna: 24 dBi Grid antenna pointing to node 2, 3, and 4
>AP: Linksys WRT54
>Cable: 15m LDF450, 20m POE
>

If Node 1 is where your server equipment is located and all other nodes need 
to connect to it and they have LOS, then this is where you would be using 
the Omni. This Node runs as an AP while the other nodes run in client mode.

wow, great if you can get something on a church spire. where is this? This 
is probably the point that other MW nodes could connect to / relay through.

>Node 2: Two story house 900m from Node 1.
>Antenna: Superpass 8 dBi omni pointing to node 1
>Cable: 3m antenna cable, 10m POE
>
put the 15 dBi grid at this node pointing to node 1

>Node 3: Two story house right on top of the Burke Road Hill in Camberwell,
>2.5km from Node 2.
>Antenna: 15 dBi Grid antenna
>AP: Linksys WRT54
>Cable: 5m antenna cable, 10m POE
>
Put the other 24 dBi antenna at this node pointing to node 1

>Node 4: Two story house on top of a hill but possible there's a hill 
>between
>it and Node 3. About 3.5km from Node 3.
>Antenna: 24 dBi Grid antenna
>AP: Linksys WRT54
>Cable: 5m antenna cable, 10m POE
>
>All nodes are in a line and I need node 1 to point to all other nodes. So
>node one in my opinion needs to be high and powerful, same with node 4.
>

Hmm, haven't seen your diagram but when you say all nodes have LOS do you 
mean to node 1 or to the next node in your "chain"?

You want this:

Node 1 Omni  / AP  ---------- Node 2 15 dBi grid / client
      |       |
      |        ----------------------- Node 3 24 dBi grid / client
      |
       --------------------------------Node 4 24 dBi grid / client


not this:

Node 1 ----- Node 2 ------- Node 3 ------- Node 4

The problem with the second is that with your grid antennas each node is 
focused one way and the beam is pretty narrow. Also I don't think you would 
really want each node relaying packets to node 1 if you could get them there 
in one hop.



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